Goals: Stardust's encounter with asteroid Annefrank was used as a dress rehearsal to prepare for its primary mission to study comet Wild 2.

Accomplishments: The spacecraft passed within about 3,300 km (2,050 miles) of Annefrank and determined the asteroid is irregularly shaped, cratered and about 8 km (5 miles) in diameter. Although the main goal was to test systems and procedures for its primary mission, Stardust turned up intriguing information about Annefrank. The asteroid turned out to be about twice the size anticipated, but with a much dimmer surface.